Hi,

I am trying to simulate the phase noise of a 25GHz LC oscillator using pss (flexible balance) and pnoise analysis. In the Direct Plot Form, there are two different Phase Noise options:

1) Analysis: pnoise Function:Phase Noise

2) Analysis: pnoise jitter Function: Phase Noise

The two above give different results (#1 is approximately ~2.3dBc lower than #2 @ 10MHz offset). What is the difference between these two functions?

I would like to note that #1 provides much more numerically stable results than #2.